.web{
    margin: 0 auto;
    width: 1000px;
    height: 1265px;
    border: solid;
    background-color: skyblue;
}
/* 公共头部 */
header{
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  
    width: 1000px;
    height: 128px;
    background-color: slateblue;
}
.top-Rectangles{
    width: 1000px;
    height: 16px;
    background-color: #6db6ff;
}
.top-banner{
    position: relative;
   width: 1000px;
   height: 80px;
   background-color: snow;
}
.logo{
    position: absolute;
    width: 121px;
    height: 63px;
    left: 73px;
    background-color: tan;
}
.menu-bar{
    
}